Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab6d15d461a23de…

MALICIOUS

PDF

72.1 KB Created: 2021-02-12 13:44:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4bbf5613b406c652b67d4a910fc70d58 SHA-1: db1e79d3495d26f94b5b3abb8cf178106e41c844 SHA-256: aab6d15d461a23de4967ad73c88e4e71fa0147fe3f34090f06817a99af7b87b4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://maypoin.ru/123?utm_term=google+form+upload+attachment PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372086/normal_601e1b3b62f02.pdfIn PDF document text
    • http://ledimpress.biz/critical_thinking_the_art_of_argumentk7uhl.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/bevorarubikojevobih5z9g.pdfIn PDF document text
    • http://pogadai.xyz/35412901858rl9td.pdfIn PDF document text
    • http://amst-watch-v2.club/74240925590zpssm.pdfIn PDF document text
    • http://8gusevshop.space/382863542908whbx.pdfIn PDF document text
    • http://nesobaka3.xyz/mabisedudigewavoroditumit5beh0.pdfIn PDF document text
    • http://cosmicgig.com/flights_to_miami_from_detroit_deltap8bwg.pdfIn PDF document text
    • http://physcoo.com/capital_inicial_acustico_nycs3nf7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446650/normal_5ff45b8ecd4e9.pdfIn PDF document text
    • http://odemebayisitrafik.com/79613611368s608l.pdfIn PDF document text
    • http://discout.online/tuwagitowedodosorolol095ds.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383918/normal_5ffe018f4ca22.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dodigemadepa.epizy.com/wujedoxezipuzosiw.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/88611307588.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/similarities_between_phonetics_and_phonology.pdfIn PDF document text
    • http://zekubegem.epizy.com/17510778987.pdfIn PDF document text
    • http://gezuvemun.rf.gd/fuluxisazoxololosuko.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC7 5424 bytes
SHA-256: 11c6f8a0a1ef9b1db43e2b5ac7c38b5ad6aac8ceb0ec260479d177bc1b8ec6ff
font_01_sfnt_off0000ed14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED14 11460 bytes
SHA-256: 09f096d8ea58dc5b29e42b96d411d05e8a2904bf6dbc848f6d70abd1a16502f2